Change max size of uncompressed uImage's to 8MByte and add

CFG_BOOTM_LEN to adjust this setting.

As mentioned by Robin Getz on 2005-05-24 the size of uncompressed
uImages was restricted to 4MBytes. This default size is now
increased to 8Mbytes and can be overrided by setting CFG_BOOTM_LEN
in the board config file.

Patch by Stefan Roese, 13 Mar 2006

CHANGELOG

@@ -2,6 +2,16 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Change max size of uncompressed uImage's to 8MByte and add
+  CFG_BOOTM_LEN to adjust this setting.
+
+  As mentioned by Robin Getz on 2005-05-24 the size of uncompressed
+  uImages was restricted to 4MBytes. This default size is now
+  increased to 8Mbytes and can be overrided by setting CFG_BOOTM_LEN
+  in the board config file.
+
+  Patch by Stefan Roese, 13 Mar 2006
+
 * Fix problem with updated PCI code in cpu/ppc4xx/405gp_pci.c
   Patch by Stefan Roese, 13 Mar 2006
 

README

@@ -421,7 +421,7 @@ The following options need to be configured:
 		Space should be pre-allocated in the dts for the bd_t.
 
 		CONFIG_OF_HAS_UBOOT_ENV
-		
+
 		The resulting flat device tree will have a copy of u-boot's
 		environment variables
 
@@ -1734,6 +1734,12 @@ Configuration Settings:
 - CFG_MALLOC_LEN:
 		Size of DRAM reserved for malloc() use.
 
+- CFG_BOOTM_LEN:
+		Normally compressed uImages are limited to an
+		uncompressed size of 8 MBytes. If this is not enough,
+		you can define CFG_BOOTM_LEN in your board config file
+		to adjust this setting to your needs.
+
 - CFG_BOOTMAPSZ:
 		Maximum size of memory mapped by the startup code of
 		the Linux kernel; all data that must be processed by

common/cmd_bootm.c

@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2000-2002
+ * (C) Copyright 2000-2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * See file CREDITS for list of people who contributed to this
@@ -140,6 +140,10 @@ static boot_os_Fcn do_bootm_lynxkdi;
 extern void lynxkdi_boot( image_header_t * );
 #endif
 
+#ifndef CFG_BOOTM_LEN
+#define CFG_BOOTM_LEN	0x800000	/* use 8MByte as default max gunzip size */
+#endif
+
 image_header_t header;
 
 ulong load_addr = CFG_LOAD_ADDR;		/* Default Load Address */
@@ -150,7 +154,7 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	ulong	addr;
 	ulong	data, len, checksum;
 	ulong  *len_ptr;
-	uint	unc_len = 0x400000;
+	uint	unc_len = CFG_BOOTM_LEN;
 	int	i, verify;
 	char	*name, *s;
 	int	(*appl)(int, char *[]);